Univention Corporate Server 3.2 erratum 249 (bugfix)

* A display bug was resolved which showed scrollbars in the search input
field in the user module when using the Chromium browser
* A display but was resolved which caused the login button to be
dispositioned when using the Firefox browser.
* Fixed a bug which prevented that UMC components could write into their
logfiles.
* Open the Software Update UMC module upon UMC startup during release updates
and show a information dialog about the current update process.